
@keyframes roll {
  0% {
    left: 0px;
  }
  100% {
    left: -5rem;
  }
}

.wrap {
  width: 3rem;
  margin: .15rem auto;
  background: orange;
  overflow-x: auto;
  padding: .1rem .15rem;
}
.testScroll {
  white-space: nowrap;
  position: relative;
  left: 0;
  animation: roll 16s linear infinite;
}